Forskere har vært kritiske til kvaliteten i open access tidsskrifter:
"The SOAP (Study of Open Access Publishing) project (http://project-soap.eu/) was financed in 2009 by the European Commission and performed a large-scale survey on the attitudes and experiences of researchers with OA publishing. Around 50,000 answers were collected across disciplines and around the world, showing an overwhelming support for the idea of OA, while highlighting funding and quality as the main barriers to publishing in OA journals."
Denne undersøkelsen innen epideomologi finner ingen kvalitetsforskjeller mellom open access og tradisjonell publisering:
"In conclusion, we report that studies published in OA journals in the field of oncology approach the same methodological quality and quality of reporting as studies published in non-OA journals. Additional studies including a larger set of papers and different fields of publication could provide new insights into the quality assessment of studies published in open access and subscription journals."
Citation: Pastorino R, Milovanovic S, Stojanovic J, Efremov L, Amore R, Boccia S (2016) Quality Assessment of Studies Published in Open Access and Subscription Journals: Results of a Systematic Evaluation. PLoS ONE 11(5): e0154217. doi:10.1371/journal.pone.0154217